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Asking for help with age/sex of GBR

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Hi there I have been reading the sticky on sexing GBR's but I still can not figure it out!! so I was wondering if anybody on a/c could offer assistance and also give any indication of their age as I am thinking one of them may be quiet young compared to the other. Thanks in advance for any help/advice given.

I can't tell on the first one. I've never seen one that didn't even have the black spot. But the one in the second pic looks like a female to me. There is a blue sheen in the black spot. Typically, males with have a bold black spot with no blue shining in it. Also, if im correct on this, females have black stripes on their 2 front fins. But don't solely rely on my answer. Im sure somebody much more knowledgable than me will come along soon to help out.

@Gogi
yea I meant they were females with the black stripes on the fins. Sorry for the poor wording and confusion. I think mine is still a juvenile so im having difficulty sexing it as well. The blue inside the black dot hints at a female, but I see no pink area on the belly. This fish is barely over an inch so im thinking its just too early to tell.

Thanks everyone for all your help I do appreciate it , I am new to keeping this species of fish (started out with guppies/mollies) and so far really enjoying them! it will be interesting to see how her markings develop, i shall post more pic's of her as she grows and/or develops any markings if you like. oh and just to confirm they are both females?